- Eratosthenes Experiment Home Page
- Experiment of the Month: A Holiday Measurement of Earth’s Circumference
- Millersville University
- https://www.millersville.edu/physics/experiments/058/index.php
- 7 Ways to Prove the Earth is Round (Without Launching a Satellite)
- Live Science
- by Stephanie Pappas – Live Science Contributor
- https://www.livescience.com/60544-ways-to-prove-earth-is-round.html
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- Do People Really Think Earth Might Be Flat?
- Scientific American
- by Craig A. Foster, Glenn Branch
- https://blogs.scientificamerican.com/observations/do-people-really-think-earth-might-be-flat/
- Most flat earthers consider themselves very religious
- Yes, Flat-Earthers Really Do Exist
- Scientific American Blog Network
- by Glenn Branch, Craig A. Foster
- https://blogs.scientificamerican.com/observations/yes-flat-earthers-really-do-exist/
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The Mill Review 